Shockless shake-out bail for molds



NOV- 19, 1,929- J. T. RAMSDEN- 1,736,366

SHOCKLESS SHAKE-OUT BAIL FOR MOLDS Nov. 19, 1929. l J. T. RAMSDEN1,736,365

SHOCKLESS SHAKE-OUT BAIL FOR MOLDS Filed May 22, 192e 2 `Smets-sheerI 2@y www@ V' ,Sk/MW Patented Nov. 19, 1929 UNITED STATES PATENT oFFIcEJOHN T. RAMSDEN, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOB IO THE TABORMANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION 0FPENNSYLVANIA SHOCKLESS SIIAKE-OUT BAIL FOR MOLDS Application filed May22,

The present invention relates to improvements in shake-out bails used inconnection with multiple molding machines for shaking sand out of thestack of molds or flasks after the castings have been poured. Oneobjection to shake-out bails with which I am familiar is that they maynot be suspended from an overhead crane because the vibrationcrystallizes the crane hooks and chains.

The principal object of the present invention is to provide a shocklessshake-out bail in the sense that no objectionable vibrations set up bythe vibrator employed to shake out the sand are transmitted to the yokeso that the yoke can be suspended from an overhead crane or the like.Another object of the invention is to provide a convenient and reliableshake-out bail of the character indicated.

Other objects of the invention will appear from the followingdescription, and the invention, generally stated, may be said to com*prise a shake-out bail for a stack of flasks including a yoke havingsuspension means, tension rods freely slidable through the yoke andhaving lugs, vibrators on the rods, springs between the lugs and yokefor supporting the rods and opposing transmission of vibration to theyoke, and feet at the ends of the rods for engaging the bottom flask.

The invention also comprises the improvements to be presently describedand finally claimed.

In the following description reference will be made to the accompanyingdrawings forming part hereof, illustrating a shake-out bail embodyingfeatures of the invention, and in which Figure 1 is a front elevationalview of a shake-out bail embodying features of the invention and showinga stack of flasks or molds supported thereby.

Fig.- 2 is a sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is an edge View of one of the feet, and

Fig. 4 is a top or plan view of the same.

Referring to the drawings 1 is a yoke having suspension means 2 by whichit can be suspended from a crane, hoist or the like. The

1928. Serial No. 279,795.

on the upper ends of the rods 4. 7 indicates springs interposed betweenthe lugs and yoke for supporting the rods and opposing transmission ofvibration from the rods to the yoke. As shown the springs are seated onthe inclined bearings 8 so as to give the rods 4 .a tendency tomovetowards each other at their lower ends. At the lower ends of the rodsythere are feet 8, and they are shown as claw feet so that the claws 9may engage the corners of the bottom flask 10. The feet 8 are shown ashaving upwardly inclined surfaces 11 which engage with downwardlyinclined bearing surfaces on the under side of the lugs 19. of the flask10. The purpose of the inclined bearing surfaces is to insure engagementof the feet with the flask.

The air line for the vibrators is shown at 13, and it includes the endvalve 14 and the flexible connections 15. 16 is a means for lubricatingthe vibrators.

Normally the lower ends of the rods are spaced apart and for use theyare swung toward each other under the ends of the bottoni flask of thestack. The yoke is then lifted by means of the eye 2 carrying with itthe stack of flasks, and when the vibrators are started the liasks arefreed from sand but the springs 7 prevent transmission of vibration tothe yoke. n

It will be obvious to those skilled in the art to which the inventionrelates that modifications may be made in details of construction andarrangement and matters of mere form' without departing from the spiritof the invention which is not limited to such matters or otherwise thanthe prior art and the appended claims may require.

I claim:

1. A shockless shake-out bail for a stack of flasks comprising a yokehaving suspension means, tension rods slidable through the yoke andhaving lugs, vibrators operatively connected with the rods, springsbetween the lugs and yoke for supporting the rods and opposingtransmission of vibration to the yoke, and feet at the ends of the rodsfor engaging the bottom flask.

2. A shockless shake-out bail for a stack of flasks comprising a yokehavinggr suspension means, tension rods slidable through the yoke andhaving lugs, vibrators operatively connected with the rods, springsbetween the lugs and yoke for supporting the rods and opposingtransmission of vibration to the yoke, feet at the ends of the rods forengaging the bottom flask, and air connections on the yoke for thevibrators.

3. A shockless shake-out bail for a stack of flasks comprising a yokehaving suspension means and inclined bearings, tension rods freelyslidable through the yoke and having;` lugs, vibrators on the rods,springs between the lugs and inclined bearings, and feet at the ends ofthe rods having inclined faces for engagement With complemental inclinedfaces provided on the bottom flask.

1l. A shockless shake-out bail for a stack of flasks comprising a yokehaving suspension means and inclined bearings, tension rods freelyslidable through the yoke and having lugs, vibrators on the rods,springs between the lugs and inclined bearings, and claw feet havinginclined faces for engag ing inclined faces provided on the bottom flaskand also adapted to engage the corners of that flask.

JOHN T. RAMSDEN.

